发明名称 |
Exponential-Logarithmic Analog-to-Digital Converter |
摘要 |
The present invention provides an analog to digital converter by using an exponential-logarithmic model. The exponential-logarithmic analog-to-digital converter includes an exponential circuit which acquires an analog input voltage and generates an analog output voltage that is an exponential function of the input voltage. A positive feedback circuit that succeeds the exponential circuit exhibits a natural logarithmic characteristic. A comparator is connected to the positive feedback circuit to compare an output voltage of the positive feedback circuit with a reference voltage. Via the exponential-logarithmic conversion technique, the time interval or pulse produced by the positive feedback circuit is a linear function of the magnitude of the input voltage. Based on the comparator output, a counter is employed to translate the analog input signal to its digital representation.
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申请公布号 |
US2012176262(A1) |
申请公布日期 |
2012.07.12 |
申请号 |
US201213347666 |
申请日期 |
2012.01.10 |
申请人 |
CHEN HSIN;CHAN HSIN-CHI;CHEN YUNG-CHAN;NATIONAL TSING HUA UNIVERSITY |
发明人 |
CHEN HSIN;CHAN HSIN-CHI;CHEN YUNG-CHAN |
分类号 |
H03M1/12 |
主分类号 |
H03M1/12 |
代理机构 |
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地址 |
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